Abstract Of all the alternatives to hydrocarbon fuels, hydrogen offers the greatest long-term potential to radically reduce the many problems inherent in fuel used for transportation. Hydrogen vehicles have zero tailpipe emissions and are very efficient. If the hydrogen is made from renewable sources, such as nuclear power or fossil sources with carbon emissions captured and sequestered, hydrogen use on a global scale would produce almost zero greenhouse gas emissions and greatly reduce air pollutant emissions.The aim of this work is to realise a traceability chain for hydrogen flow metering in the range typical for fuelling applications in a wide pressure range, with pressures up to 875 bar (for Hydrogen Refuelling Station - HRS with Nominal Working Pressure of 700 bar) and temperature changes from −40 °C (pre-cooling) to 85 °C (maximum allowed vehicle tank temperature) in accordance with the worldwide accepted standard SAE J2601. Several HRS have been tested in Europe (France, Netherlands and Germany) and the results show a good repeatability for all tests. This demonstrates that the testing equipment works well in real conditions. Depending on the installation configuration, some systematic errors have been detected and explained. Errors observed for Configuration 1 stations can be explained by pressure differences at the beginning and end of fueling, in the piping between the Coriolis Flow Meter (CFM) and the dispenser: the longer the distance, the bigger the errors. For Configuration 2, where this distance is very short, the error is negligible.

中文翻译：

---

加氢站校准与可追溯的重量标准

摘要 在碳氢燃料的所有替代品中，氢提供了最大的长期潜力，可以从根本上减少运输燃料固有的许多问题。氢燃料汽车的尾气排放为零，而且非常高效。如果氢气是由可再生能源制成，例如核能或化石能源，并捕获和隔离碳排放，那么在全球范围内使用氢气将产生几乎为零的温室气体排放并大大减少空气污染物排放。这项工作的目的是在宽压力范围内为燃料应用的典型范围内实现氢气流量计量的可追溯性链，压力高达 875 bar（用于加氢站 - HRS，标称工作压力为 700 bar），温度变化范围为 -40 °C（预冷）至 85 °C（最大允许车辆油箱温度），符合全球标准接受标准 SAE J2601。几个 HRS 已在欧洲（法国、荷兰和德国）进行了测试，结果显示所有测试具有良好的可重复性。这表明测试设备在实际条件下运行良好。根据安装配置，已检测并解释了一些系统错误。配置 1 站观察到的误差可以通过加油开始和结束时的压力差来解释，在科里奥利流量计 (CFM) 和加油机之间的管道中：距离越长，误差越大。对于配置 2，